Binder for sewing machines



.lune 30, 1931. T. oNElLL BINDER FOR SEWING MACHINES 'Filed March l5,1929 2 Sheets-Sheet l 51m/oem@ Y/o/fzas @Mill dtfm mag June 30, 1931. T.oNElLL BINDR FOR SEWING MACHINES Filed March l5, 1929 2 Sheets-Sheet 2Patented June 30, 1931 UNITED srA'LEis PATENT orFlCs y THOMAS ONEILL, 0FIBROOKLYN, NEI/V YORK, ASSIGNOR T0 THE SINGER MANUFAC- 'TUBING' COMPANY,OTE ELIZABETH, NEVI JERSEY, A CORPORATION OF NEW JERSEY BINDER FOR-SEWING- MACHINES Application filed March 15, 1929.

posed ycrosswise of the line of seam forma-A vr5 tion and are providedwith spaced delivery Cil lips oblique to the Ybinder length.

f Binders of this type are employed to apply a'binding-strip upon a bodymaterial margin passed between the delivery lips of the binder Vin adirection substantially transverse to the direction of passage of abinding strip through the binder. As the delivery end o-f the binder isof course disposed in advance of the needle-path, it has heretofore beendifficult to satisfactorily secure the binding-.strip when applying it'to work margins having reentrant-angles. This dificulty increases Withthe width of the binding employed, because the lfront side of the innerfold-forming or binding doubling rib of the binder is necessarily spacedincreasingly farther from the needle with increases inthe width of thebinding and it is this folding rib which is engaged by the unbound sideof the work-angle and therefore interferes with thefeeding of the workto veffect stitching thereof to substantially the vertex of the angle.Consequently, in turning the work to bind an internal corner thereof,the needle is liable to entirely miss the body material and thebinding'bridges the corner instead of being snugly fitted there into.v ni VThe present invention aims to. overcome the described diiiiculty andto provide means permittingbinding-strips to be snugly applied to thecorners of reentrant-angles and scalloped work-margins, with thestitching securely'anchored in the body material.

' In a preferredembodiment of the invention which is more particularlyadapted for binding comparatively stiff body materials such as leathers'or imitation leathers, the fold-forming rib of the binder employed fordoubling the binding-strip longitudinally is provided with a. recessextending lengthwise of 'said ribv and terminating in the de- Y liveryend of the binder.

YThis construction permits the unbound side of the work-angle to enterthe rib-recess Serial No. 347,295.

to a point substantially abreast of the needle, whereupon the work maybe turned about a point-contact edge-guide at the rear side of thebinder. The entering of the body material into the rib-recessnecessarily indents the binding-strip and to assist in taking up thisindentation after the turning of the Work, there is provided a springtongue of which the free end extends through the mouth of the rib-recessand may yield, under the pressure of the unbound side of the work-angleduring the feeding of the work, to complete the stitching toa pointsubstantially abreast of the work corner. The indenting of thebinding-strip draws in the edges thereof and has the effect of taking upslack in the binding formed by turning the work and therefore the edgesof the binding are nicely rounded at the corner, while its middleportion is snugly fitted into the corner. The rearwardly yieldingmovement of the spring tongue is limited by a suitable stop-member attherear side of the binder, which stopmeniber functions as an edge-guidefor the body material during the binding of straight runs thereof. Thespring tongue preferably extends beyond the guiding edge of saidstop-member, whereby the free end of said tongue may function as a guidefor the work when turning the same to stitch a corner.

In the accompanying drawings, Fig. l is a front side elevation of theimproved binder and of a portion of a sewing machineto which it has beenapplied. Fig. 2 is a rear side elevation of the binder. Fig. 3 is avertical section substantially on the line 3 3 of Fig. 2. Fig. 4 is atop plan view of a portion of the sewing machine cloth-plate andattached binder. Fig. 5 is a horizontal section substantially on theline 5 5 of Fig. 2.l Fig. 6 shows a portion of bound reentrant-anglework and in dotted lin-es the delivery end of the binder to illustratethe position of the spring tongue linst before the corner is turned.

Referring to the drawings, the present improvement is shown as embodiedin a sewing machine having a cloth-plate l and an overhangingbracket-arm terminating in a head 2, l Suitably secured upon the clothil plate isa throat-plate 3 which is slotted to receive a feeddog 4 ofthe lower four-Inotion type and 1s apertured to permit reciprocationtherethrough of a needle 5. vThe y needle 5 is carried by a needle-bar 6journaled for endwise reciprocation in a vibratory frame 7 supportedbythe head 2 in a manner (not shown) to provide for workfeedingmovementsof the needle,-i. e., lateralk i y movements of the needle in theVdirection of and with the work-advancing movements of the feed-dog 4.

Opposed to the feed-dog 4 is a presser-foot 8 carried by a presser-bar9, and a feedingy foot 10 carried by a .feed-bar 11, the presser- 15known in this kart' is believed to require no .further description.

Hingedly secured upon the cloth-plate 1, by means of a pivot-screw 12,Vis a swing-out binder-supporting plate 13 Vprovidedon its under sidewith a pin 14 adapted to enter a suitable aperture in the cloth-plate toproperly locate said supporting-plate in theoperative position of thebinder carried -thereby.v The supporting-plate 13 isy slotted at 15 toprovide a depressed wing 16 positioned in the clearance recess 17form-ed in the clothplate 1 for retraction of the usual slideplate 18.

Secured upon the*supporting-plate wing 16 by screws, as 19 foradjustment crosswise vof the line of seam formation is the shank 2O of`an arm 21 sustaining a binder 22 of the longitudinally.

stripreversing type. In the present instance, the binder 22 ismade'ofsheet metal' bent to provide an inner fold-forming ribv 23 whichfunctions to. double .a binding-strip The upper'slde member-ofthe rib 23ter.-

minatesinA a reversely bent flange 24 lcon-` stituting in edect ascrollforturning in the upper Vedge of the binding, said lian-ge l-24 1beingin the present instance soldered to the under side of thesupporting arm 2li The lower side member Yof the rib 23 also ter-`Ininates in a flange 25 to provide. a guiding passage lfor the loweredge of the bindingstrip, said lower edge of the binding-'strip beinginthe present case not inturned, as will be observed from an Vinspectionof Fig. 6. As the rpresent binder is designed more particularly forheavy work, it is preferred to employ further Vsupporting -meanstherefor.

' To this end, the lower flange 25 is soldered to an arm .26 adjustably.secured Vby screws, as 27, upon the supporting-plate wing 16.

The receiving end 28 of the binder is vertically disposed and issubstantially flat, the binder-flanges 24 and 25 converging from liveryn end. This delivery Vend comprises spaced lips 29 and 30 partly cutaway to provide strip-reversing edges, as f 31 and 32, oblique to thelength of the binder, i. e., inclinedto the direction jof passage ofabinding-strip through the binder and also inclined to the line of seamformation. The

.binder is,'as usual, disposed crosswise of the line of seam formation,it being Vpreferred to position Ythe binder so that it is slightlyinclined tothe line of feed, withrthe Vbinder delivery end in advance ofits receivingend.

The supporting-plate 13 is suitably cut away to permit positioning ofthe lower side the cloth-plate. To better ldirect the. body materialtojbe bound between the lips 29, the supporting-plate 13 is providedwith'a raised portion ,33 in advance of said lips.

v In order that the unbound. side of reentrant-angle work may beadvanced by the feeding mechanism Yofthe machine suliciently far` tostitch to a point substantially abreast of the corner ofthe work, thebinding-strip doubling rib'23 is provided lengthwise thereof with arecess 34 inthe front face of said-rib and terminating inthe deliver7end of the binder Abetween the lips 29 and 30 thereof. This recess isentered by the unbound side of the work angle, which causes thebinding-strip to be indented under the.

action of the feeding mechanism. VBy positioning the binder at an angletothe line of feed as described, it is evidently unnecessary to continuethe recess 34 the entire length of the binder. y

rojecting into said recess .3 4 is a spring tongue 35, which in thepresentcase lis soldered to the rearV side of the binder at the workreceiving en d thereof. This .tongue 3,5 is free toyield to the passageof the work and tol-an extentlimited! by a stop-member Y 36bridgingtheupper and vlowermeinbers ofthe rib 23 at'the rear sideof 'thebinder. `The edge 37 of the stop-member constitutes an edge-guide forthe binding-strip and body material in straight runs thereof and as thefree end of the tongue Ywhen pressed into Vcontact with the member 36extends slightly beyond the edge 37,. the work may be swung about thepoint-contact afforded by the lfree `end of the tongue .when turningthecorner of the work. After the work is turned, the tongue returns toits former position where- Vsaid receiving end 28 toward the binder de.-

Aof the binder substantially in the plane of .Y

in-it projects slightly thro'ugh-therecess 34 .and in doing so, it takesup the indent-ation produced in the binding-strip. by the Y entrance ofthe body material into said recess.

This indentation of the'binding-strip causes some retraction of theyedges of said strip and .in thus taking Vup the fullness thereof, the

vbinding may be smoothly applied tothe corner.

lVhile the sheet metal type of strip-reversing binder has been hereindescribed in general terms, it is to be understood that the invention isequally applicable to other types of strip-reversing binders having asolid block for doubling the binding-strip longitudinally. The essentialfeature of the invention is the provision of means, in a stripreversingbinder, to permit feeding of the body material having reentrant-angles,or infact scallops, to a. point wherein the binding may besatisfactorily secured to internal angles and curved work.

In Fig. 6 of the drawings is illustrated a fragment of work in which abody material M, having a reentrant-angle, is bound by a binding-strip Bdoubled longitudinally to embrace the edge of the body material, theupper portion of the binding-strip having` its free edge inturned. Thebinding is secured by stitches S and it will be observed, by theillustration in dotted lines of the present l binder deliverv end, thatthe side A of the work-angle may be advanced in t-he direction of feed,indicated by the arrow, to lay the bindinfv snugly into the corner ofthe workangle.

Having thus set forth the nature of the invention, what I claim hereinis 1. A strip-reversing binder having an oblique delivery end and aninner fold-forming rib about which a binding-strip is doubledlongitudinally, said rib being provided lengthwise of the binder with arecess in its front face terminating in the delivery end of the binder.

2. A strip-reversing binder having an oblique delivery end, an innerfold-forming rib for doubling a binding-strip longitudinally, said ribbeing provided lengthwise of the binder with a recess in its front faceterminating in the delivery end of the binder, and a yielding tonguedisposed in said recess.

3. A strip-reversing binder having spaced delivery lips oblique to thebinder length, a body material edge-guide between said lips disposedvatsubstantially the rear side of the binder, and an inner fold-forming ribabout which a binding-strip is doubled longitudinally, said rib beingprovided lengthwise of the binder with a recess in its front faceterminating in the delivery end of the binder.

4. A strip-reversing binder having spaced delivery lips oblique to thebinder length, a body material edge-guide between said lips disposed atsubstantially the rear side ofthe binder, an inner fold-forming rib fordoubling a binding-strip longitudinally, said rib being providedlengthwise of the binder with a recess in itsfront face terminating inthe delivery endof the binder, and a yielding tongue disposed in saidrecess.

5. In a sewing machine having a reciprocatory needle and work-feedingmechanism, a binder disposed crosswise of the line of seam formationhaving spaced delivery lips inclined to the binder length and an innerfoldforming rib about which the binding-strip is doubled longitudinally,said rib being provided lengthwise of the binder with a recess in itsfront face terminating in the delivery end of the binder, and a bodymaterial edgeguide at the rear side of said binder substantially abreastof the needle, said recess providing an open passageway from the frontside of the binder to said edge-guide.

G. In a sewing machine having a reciprocatory needle, work-feedingmechanism, a strip-reversing binder disposed crosswise of the line ofseam formation to incline forwardly from its receiving toward itsdelivery end in advance of the path of the needle, said binder having aninner fold-forming rib about which a binding-stripv is doubledlongitudinally, and said rib being provided longitudinally thereof witha recess in its front face terminating in the delivery end of thebinder.

7. A strip-reversing binder having spaced delivery lips oblique to thebinder length, an inner fold-forming rib provided longitudinally thereofwith a recess in its front face terminating in the delivery end of thebinder, a yielding tongue projecting into said recess, and a stop-memberpositioned to limit the rearward movement of said tongue.

8. In a sewing machine having a reciprocatory needle, work-feedingmechanism, a binder disposed crosswise of the line of seam formationhaving spaced delivery lips oblique to the binder length and having aninner foldforming rib about which a binding-strip is doubled, said ribbeing provided longitudinally thereof in its front face with a recessterminating in the delivery end of the binder, and a work-support fordirecting a body ma.- terial in the plane of said recess.

In testimony whereof, I have signed my name to this specification.

THOMAS ONEILL.

